Cyprinodon atrorus Miller, 1968
Bolson pupfish
Bolson pupfish,  Cachorrito del bolsón,  Perrito del Bolson

Family:  Cyprinodontidae (Pupfishes), subfamily: Cyprinodontinae
Max. size:  4 cm TL (male/unsexed)
Environment:  benthopelagic; freshwater; pH range: 7.5 - 8; dH range: 12 - 15, non-migratory
Distribution:  Central America: Río Salado and Cuatro Ciénegas systems in Mexico.
Diagnosis:   
Biology:  5.0 cm max TL (Ref. 2059). Not a seasonal killifish. Is difficult to maintain in aquarium (Ref. 27139).
IUCN Red List Status: Endangered (EN); Date assessed: 26 September 2018 (B1ab(i,ii,iii)) Ref. (130435)
Threat to humans:  harmless
Country info:  Known from Río Salado and Cuatro Ciénegas systems (Ref. 81264). Also Ref. 3881. Status of threat: endangered. Criteria: 1,4,5 (http://fisc.er.usgs.gov/afs/) (Ref. 81264).


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